Pipe bending tool



C. E- ABRAHAMSON Aug. 20; 1957 PIPE BENDING "2001.

Filed March 6, 1956 I6 INVENTOR. izarZes E. flraham son ATTD RN EYE 2,803,156 i IBE BE TOOL. Charles E. Ahrahamson, La Grande, Oreg. Applic tion Mara. 6, 1956, SerialNo. 569,776 H can; (ci. 81-45) This invention relates to hand tools particularly adapted for use by plumbers, steam fitters and the like, and in particular an elongated handle having a roller rotatably mounted on an extension at one end and another roller, of a smaller diameter, rotatably mounted in a clevis on the end of a threaded shank extended through the handle and adapted to be adjusted in relation to the former roller by a thumb nut threaded on the shank and positioned in an opening through the handle.

The purpose of this invention is to provide a pipe bending tool particularly adapted for use by an individual and which is adapted to be carried in a tool kit and the like.

Various types of pipe bending devices have been provided for both individual and commercial use, however, it is ditficult to find a device that is adapted to be used on small pipes or tubing, such as copper tubing used in kitchen installations and also on diesel engines and the like. With this thought in mind this invention contemplates a pipe bending tool particularly adapted for small tubing in which the tool is adapted to be used by 1 an individual for bending tubing to ditferent radii and for making individual installations.

The object of this invention is, therefore, to provide a pipe bending tool having a pair of rollers rotatably mounted in a handle with the position of one of the rollers adjustable in relation to the other to facilitate bending pipe and tubing on the job and to different radii.

Another object of the invention is to provide a pipe bending tool that is adapted to be used by a layman.

A further object of the invention is to provide a pipe bending tool particularly adapted for use by an individual and in which parts thereof are adjustable to tubing of difierent sizes and also for making bends to dilferent radii in which the tool is of a simple and economical construction.

With these and other objects and advantages in view the invention embodies a handle having an elongated extension on one side with a large roller rotatably mounted on the extended end of the extension and with a small roller rotatably mounted in a yoke on the end of the threaded shank whereby the position of the small roller in relation to the large roller is adapted to be adjusted by rotating a thumb nut in a transversely disposed recess at the end of the handle and which is threaded on the shank of the yoke of the small roller.

Other features and advantages of the invention will appear from the following description taken in connection with the drawing, wherein:

Figure l is an elevational view looking toward the back of the tool.

Figure 2 is a front elevational view of the improved pipe bending tool showing the relative positions of the rollers and also edges of a thumb nut positioned in the end of the handle for adjusting the location of one roller in relation to another.

Figure 3 is a longitudinal section through the imof the tool, other parts being omitted.

proved pipe 'bendingtool' with a large rollerrotatably mounted on an end thereof shown in section and with a small roller and mounting elements. thereof shown in elevation. 1.. j

1 Figure 4 is a cross section through one of the rollers Figure 5 is a crosssectionthrough the outer end of a handle of thetool, being taken on line 5-5 of Fig. 3. ;-Figure 6 is a cros's section through the tooltaken on line 6-6"of Fig.2" showing the adjusting nut and parts of the rollers.

Referring now to the drawing wherein like reference characters denote corresponding parts the improved pipe bending tool of this invention includes a handle 10, an extension or arm 11 extended from one end of the handle and having a hub 12 on the extended end, a stud 13 mounted in the hub 12 and providing a bearing for a large roller 14, and a yoke 15 providing a mounting for a small roller 16 and having a shank 17 with a threaded section 18 thereon extended upwardly through the handle, the lower end of the handle being provided with a transversely disposed recess 19 in which a thumb nut 20, threaded on the shank of the yoke 15 is positioned.

The hub 12 is provided with a countersunk opening 21 in which a head 22 of the stud 13 is positioned and the opposite end of the stud is provided with a threaded section 23 having a nut 24 threaded thereon, the nut being adapted to clamp a washer 25 against a shoulder 26 on the stud. The shoulder 26 is spaced from the inner surface of the hub 12 a greater distance than the width of the large wheel 14 whereby with the washer 25clamped against the shoulder the roller 14 is free to rotate on the stud. As shown in Fig. 3, the stud 13 is positioned in an opening 27 in the hub 12. The hub 12 is reinforced with a rib 28 which extends around the counterbore 21 providing a boss 29 and which extends to a flange 30 positioned at the lower end of the hub portion 12.

The yoke 15 is provided with'spaced arms 31 and 32 in which a stud 33 is positioned and the stud is retained in the arms with a lock nut 34. The opposite end of the stud is provided with a head 35 that is positioned in a countersunk opening 36 in the arm 31 of the yoke.

The shank 17 of the yoke 15 is slidably mounted in a bore 37 of the handle 10 and the upper end of the shank is provided with a tongue 38 that extends through a slot 39 preventing rotation of the shank to permit turning the thumb nut 20 to adjust the position of the roller 16 in relation to the roller 14.

As illustrated particularly in Fig. 3 the large roller 14 is provided with a substantially V-shaped groove 40 and the roller 16 is provided with a groove 41 having an arcuate surface and it will be understood that the grooves ofboth rollers may be as illustrated in the drawing or the same type of groove may be used in each roller whereby the device is adapted to bend pipe or tubing of different sizes and is also adapted to make bends on different radii.

It will be understood that modification, within the scope of the appended claims, may be made in the design and arrangement of the parts without departing from the spirit of the invention.

What is claimed is:

1. In a pipe bending tool, the combination which comprises a cylindrical handle having an arm with a hub on the extended end, a large roller having an an nular groove therein rotatably mounted on a stud supported in the hub, a threaded shank having a yoke on an extended end slidably mounted in the handle, a roller having an annular groove therein rotatably mounted in said yoke, a thumh'nut threaded on the'threa'de'd shank and positioned in an opening in the handle, and means for preventing rotation of said shank.

2. In a pipe bending tool, the combination which comprises a cylindrical handle having an arm with a hub'on the extended end, a large-roller having 'an annu- Iar groove therein rotatably mounted on a stud supported in the hub, a threaded s hankhaving a yoke on an extended end slidably-mounted in the handle,v a roller having an annular groove therein rotatably mounted in said .yoke, a thumb nut threaded on the threaded shank and positioned in an opening in the handle, and a tongue extended from the threaded shank and positioned in a slot in the handle to prevent rotation of the threaded Shank.

= References Cited in the file of this patent UNITED STATES PATENTS Reach July 10, 1883 Daniels Apr. 19, 1887 Wallace June 20, 1889 Swaney July 9, 1907 Hoffman Dec. 8, 1914 Little Sept. 22, 1931 Beehler et a1. Sept. 5, 1939 Fink Apr. 11, 1944 FOREIGN PATENTS Great Britain ..Dec. 31, 1925 

